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Modelling the 2012 Lahar in a Sector of Jamapa Gorge (Pico de Orizaba Volcano, Mexico) Using RAMMS and Tree-Ring Evidence
Open AccessArticle

Evaluation of Marsh Terraces for Wetland Restoration: A Remote Sensing Approach

1
Department of Agricultural and Biological Engineering, Mississippi State University, Starkville, MS 39762, USA
2
Department of Geosciences, Mississippi State University, Starkville, MS 39762, USA
*
Author to whom correspondence should be addressed.
Water 2020, 12(2), 336; https://doi.org/10.3390/w12020336
Received: 13 December 2019 / Revised: 21 January 2020 / Accepted: 21 January 2020 / Published: 24 January 2020
(This article belongs to the Section Aquatic Systems—Quality and Contamination)
Marsh terracing is a wetland restoration technique that is being implemented in the northern Gulf of Mexico. Marsh terraces are segmented berms of soil built within shallow coastal ponds, designed to increase marsh area and reduce wave energy. Approximately 980 linear km of marsh terraces have been constructed over almost 30 years in Louisiana and Texas to combat subsidence and sea-level rise; however little research has been conducted to determine their effectiveness. The objective of this study was to assess marsh terrace performance. The change in marsh terrace areas was measured over time through remote sensing. This analysis was conducted using one-meter resolution imagery from the National Agriculture Imagery program (NAIP) from 2003 until 2017 from five Louisiana coastal parishes. Twenty terrace fields of study between 10 and 14 years old were randomly selected within each parish. Results show more predominant deposition (55%) than erosion (45%) in marsh terraces. Terrace fields with high channel density and thereby an external sediment supply show more deposition compared to low channel density fields. This is the first study assessing multiple marsh terrace fields performance. Results are promising, especially considering the current rate of sea level rise and subsidence in Louisiana. View Full-Text
Keywords: marsh terracing; marsh restoration; erosion; deposition; change detection; Chenier plain; Deltaic plain; subsidence; sea level rise; coastal wetland marsh terracing; marsh restoration; erosion; deposition; change detection; Chenier plain; Deltaic plain; subsidence; sea level rise; coastal wetland
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Osorio, R.J.; Linhoss, A.; Dash, P. Evaluation of Marsh Terraces for Wetland Restoration: A Remote Sensing Approach. Water 2020, 12, 336.

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